Saul, restraining his enthusiasm a bit, as it seems to be off-putting to the dour dwarves, says "Yes, of course we will repay you for the scroll. I understand. I do appreciate you sheltering the rest of our folks in your... caverns, though. That you are helping us at all is what I meant was generous. After all, you could have left us to fend for ourselves."
He regrets his hesitation as he struggled for the right word for the caverns. He thought of calling it their homes, but he is unsure if they actually live there, and didn't want to risk many other words which might have a negative connotation like warrens, etc.
To Makala he says "Yes, I think we were chosen for the voyage at least in part to be the defenders of the rest."